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The set of query operators defined by LINQ is exposed to the user as the Standard Query Operator (SQO) API. The query operators supported by the API are: [3] Select The Select operator performs a projection on the collection to select interesting aspects of the elements.
The programming language C# version 3.0 was released on 19 November 2007 as part of .NET Framework 3.5.It includes new features inspired by functional programming languages such as Haskell and ML, and is driven largely by the introduction of the Language Integrated Query (LINQ) pattern to the Common Language Runtime. [1]
Anonymous types are nameless classes that are generated by the compiler. They are only consumable and yet very useful in a scenario like where one has a LINQ query which returns an object on select and one just wants to return some specific values. Then, define an anonymous type containing auto-generated read-only fields for the values.
The LINQ extensions and the functional imports help developers reduce the amount of boilerplate code that is included in common tasks like querying a database, parsing an XML file, or searching through a data structure, shifting the emphasis onto the actual program logic to help improve readability and maintainability.
Here, the list [0..] represents , x^2>3 represents the predicate, and 2*x represents the output expression.. List comprehensions give results in a defined order (unlike the members of sets); and list comprehensions may generate the members of a list in order, rather than produce the entirety of the list thus allowing, for example, the previous Haskell definition of the members of an infinite list.
ADO.NET is a data access technology from the Microsoft.NET Framework that provides communication between relational and non-relational systems through a common set of components. [1] ADO.NET is a set of computer software components that programmers can use to access data and data services from a database.
C#s Language Integrated Query (LINQ) is a set of features designed to work together to allow in-language querying abilities and is a distinguishing feature between C# and Java. LINQ consists of these features: Extension methods allow existing interfaces or classes to be extended with new methods.
It is composed of two parts: Parallel LINQ (PLINQ) and Task Parallel Library (TPL). [2] [3] It also consists of a set of coordination data structures (CDS) – sets of data structures used to synchronize and co-ordinate the execution of concurrent tasks. [4]